/* Example of using string built in functions */

#include<stdio.h>

#include<string.h> /* this library has the string functions in it */

int main()

{

char m1[50] = "Jack and Jill"; /*m1 has extra room to allow concatenation*/

char m2[]=" went up the hill";/*m2 has just enough room for the number of

characters in the string */

char m3[50];

char *m4; /*m4 is a pointer to a character value */

printf("Original string 1 value: %s\n",m1);

printf("Original string 2 value: %s\n",m2);

printf("Original string 3 value: %s (note it has no meaningful value here)\n\n",m3);

strcat(m1,m2); /*m2 is concatenated to the end of m1 */

printf("strcat example(string 1 new value): %s\n\n",m1);

printf("strcpy example(string 1 is copied to string 3\n");

strcpy(m3,m1); /*m1 is copied to m3*/

printf("String 1 value: %s\n",m1);

printf("String 3 value: %s\n\n",m3);

printf("strlen taken of string 3 %2d\n\n",strlen(m3));

printf("Difference between gets & scanf with string input using a space\n");

printf("Enter a message that includes a space:");

gets(m3);

printf("\ngetf example:");

puts(m3); /*Note that with a puts you cannot have any text output -

just the string itself*/

printf("Enter another message that includes a space:");

scanf("%s",m3);

printf("\scanf example:");

puts(m3);

/* Comparing if two string have the same value */

printf("\nstrcmp example using string 1 and string 2 ");

if (strcmp(m1,m2)==0)

printf("\nString 1 is the same as String 2 \n");

else

printf("\nString 1 is NOT the same as String 2 \n");

printf("\n");

/* Assigment statement allowed because using a pointer */

m4="Direct assignment ok because it is declared a pointer VARIABLE";

puts(m4);

/* The following statement would cause an error */

/* m3="Direct assignment is NOT allowed because m3 is a pointer CONSTANT";*/

return 0;

}

Program Output